おひさまマークを動かすと影がうごいて時計みたい。なiPhoneアプリのサンプルコードを描いてみます。
import UIKit
import SceneKit
class ViewController: UIViewController {
weak var scene : SCNScene?
weak var sceneVeiw : SCNView?
weak var sun : UIView?
override func viewDidLoad() {
super.viewDidLoad()
// scene kit
self.setupScene()
self.createGround()
self.createPole()
self.createCamera()
self.createLight()
// normal view
self.view.backgroundColor = UIColor(hue: 0.6, saturation: 0.8, brightness: 1, alpha: 1)
self.createSunController()
}
func setupScene() {
var w = CGRectGetMaxX(self.view.bounds);
var sv = SCNView(frame: CGRect(x: 0, y: 0, width: w, height: w))
sv.backgroundColor = UIColor(hue: 0.5, saturation: 0.1, brightness: 1, alpha: 1)
sv.scene = SCNScene()
self.view.addSubview(sv)
self.scene = sv.scene
self.sceneVeiw = sv
}
func createGround() {
var ground = SCNBox(width: 20, height: 1, length: 20, chamferRadius: 0)
ground.firstMaterial?.diffuse.contents = UIColor(hue: 0.4, saturation: 0.4, brightness: 0.7, alpha: 1)
var groundNode = SCNNode(geometry: ground)
groundNode.name = “ground”
self.scene?.rootNode.addChildNode(groundNode)
}
func createPole() {
var pole = SCNCylinder(radius: 0.4, height: 6)
pole.firstMaterial?.diffuse.contents = UIColor(hue: 0.15, saturation: 0.6, brightness: 0.8, alpha: 1)
var poleNode = SCNNode(geometry: pole)
poleNode.position = SCNVector3(x: 0, y: 3, z: 0)
self.scene?.rootNode.addChildNode(poleNode)
}
func createCamera() {
var camera = SCNNode()
camera.camera = SCNCamera()
camera.position = SCNVector3(x: 0, y: 20, z: 15)
self.scene?.rootNode.addChildNode(camera)
if let target = self.scene?.rootNode.childNodeWithName(“ground”, recursively: false) {
camera.constraints = [SCNLookAtConstraint(target:target)]
}
}
func createLight() {
var light = SCNLight()
light.type = SCNLightTypeSpot
var lightNode = SCNNode()
lightNode.name = “light”
lightNode.light = light
lightNode.position = SCNVector3(x: 0, y: 50, z: 0)
if let target = self.scene?.rootNode.childNodeWithName(“ground”, recursively: false) {
lightNode.constraints = [SCNLookAtConstraint(target: target)]
}
lightNode.light?.castsShadow = true
self.scene?.rootNode.addChildNode(lightNode)
}
func createSunController()
{
var sun = UIView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
sun.layer.cornerRadius = 15
sun.center = CGPoint(x: CGRectGetMidX(self.view.bounds), y: CGRectGetMaxY(self.view.bounds) * 3.0 / 4.0)
sun.backgroundColor = UIColor(hue: 0.02, saturation: 0.7, brightness: 1, alpha: 1)
for i in 0…5 {
var angle = Double(i) * (M_PI/3.0)
var x = 15.0 * cos(angle) + 15.0
var y = 15.0 * sin(angle) + 15.0
var f = UIView(frame: CGRect(x: 0, y: 0, width: 6, height: 6))
f.center = CGPoint(x: x, y: y)
f.backgroundColor = sun.backgroundColor
f.transform = CGAffineTransformMakeRotation(CGFloat(angle+M_PI/4.0))
sun.addSubview(f)
}
self.view.addSubview(sun)
self.sun = sun;
}
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
var p = touches.anyObject()!.locationInView(self.view)
self.sun?.center = p
var o = self.sceneVeiw!.projectPoint(SCNVector3Zero)
var adjustY : Float = 300.0
var vector = self.sceneVeiw!.unprojectPoint(SCNVector3(x: Float(p.x), y: Float(p.y) – adjustY, z: o.z))
var light = self.scene?.rootNode.childNodeWithName(“light”, recursively: false)
light?.position = SCNVector3(x: 5.0 * vector.x, y: 50, z: –5.0 * vector.y)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}